Does the JACS TD191-B work in Brazil?
◐ 3 networks limited
Only partly. Limited on Claro, TIM and Vivo: see why on each card before you deploy.
- ◐ LimitedLacks main band B28; no band below 1 GHz whyEvidence C · 2 sources
- ◐ LimitedLacks main band B28 whyEvidence C · 2 sources
- ◐ LimitedLacks main band B28 whyEvidence C · 2 sources
- • B28 · missing
- B5
- • B3
- B1
- B40 · missing
- B7
below 1 GHz (coverage) 1–2.7 GHz 3–7 GHz mmWave · dashed = the JACS TD191-B lacks it · • = a main band
Claro · Main bands on Claro: B3 B28. The JACS TD191-B lacks B28, so coverage or capacity will be patchy. Its coverage bands (B28) carry indoor and rural service; the JACS TD191-B has none of them.
TIM · Main bands on TIM: B3 B28. The JACS TD191-B lacks B28, so coverage or capacity will be patchy.
Vivo · Main bands on Vivo: B3 B28. The JACS TD191-B lacks B28, so coverage or capacity will be patchy.
Long-term roaming is not allowed: plan a local SIM or profile (evidence B, checked 25 Oct 2026)
Same model, other markets (networks good): ✔ United States 3/3 · ◐ India 2/4 · ◐ Singapore 3/4 · ✔ Saudi Arabia 3/3 · ✔ United Kingdom 4/4 · ◐ New Zealand 0/3 · ◐ Japan 1/4 · ✔ South Korea 3/3 · ✔ Canada 3/3
Similar models here: Huawei E3372h-320 · 3/3 good · Huawei E5576-320 · 3/3 good · Huawei E5577-320 · 3/3 good
All 172 countries for the JACS TD191-B → · Brazil: every network →
Sources for this answer (5) · evidence A = two or more sources, one official · B = one official source · C = industry and independent sources
- A TD191-B 4G LTE USB Dongle: product page and specifications (LTE FDD B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B20/B66/B71, TDD B39/B41) JACS Solutions · 5 Nov 2026
- A TD191-B datasheet (DS-TD191-B, Qualcomm MDM9x07, LTE Cat 4) JACS Solutions · Sep 2022
- C Frequency checker · Brazil Kimovil · 2 Oct 2026
- C Brazil: Vivo, TIM, Claro and Algar bands for 2G, 3G, 4G and 5G Prepaid Data SIM Card Wiki · 2026
- C Vivo (Brazil): frequency bands FrequencyCheck · 2 Oct 2026
Network by network
| Network | Verdict | Main bands | 4G bands (✓ supported · ½ partly · ✗ missing) | 5G | LTE-M · NB-IoT |
|---|---|---|---|---|---|
| Claro | ◐ Limited 50% | B3 B28 | B1✓ B3✓ B7✓ B28✗ B40✗ B5✓ | n7 n40 n78 | LTE-M · NB-IoT |
| TIM | ◐ Limited 60% | B3 B28 | B3✓ B5✓ B28✗ B1✓ B7✓ | n3 n7 n28 n78 | NB-IoT |
| Vivo | ◐ Limited 63% | B3 B28 | B1✓ B3✓ B5✓ B7✓ B28✗ B40✗ | n78 n40 | LTE-M · NB-IoT |
Verdicts come from the Band Atlas engine on the open data (CC BY 4.0, GitHub). Networks change: confirm with the operator before you deploy. This page is not legal or certification advice.
